尝试：
import pandas as pd
import numpy as np
raw = []
with open('test.txt','r') as f:
for line in f:
raw.append(line.split())
data = pd.DataFrame(raw,columns = ['row','column','value'])
data_ind = data.set_index(['row','column']).unstack('column')
np.array(data_ind.values,dtype=float))
输出：
array([[ 5., 4., 3.], [ nan, 2., 1.], [ nan, nan, 0.]])
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